An updated protocol for the treatment of condylar hyperplasia: computer-guided proportional condylectomy

Publication date: Available online 15 February 2019

Source: Journal of Oral and Maxillofacial Surgery

Author(s): Salvatore Sembronio, Alessandro Tel, Fabio Costa, Massimo Robiony

Purpose

To present an updated protocol for proportional condylectomy in which virtual surgical planning and 3D printing allow one to precisely define the osteotomy level.

Methods

3D mirroring was performed to generate a virtual replica of the healthy hemi-mandible, which was subsequently aligned and overlapped with the actual mandible to estimate the level for condylectomy. A custom-fitted 3D printed surgical guide was modeled for the condylar head allowing one to reproduce virtual planning in the surgical scenario. The updated protocol for computer-guided condylectomy was applied to 7 patients.

Results

For all patients, a follow-up period of twelve months was considered. Surface deviation color maps showed a high correspondence between the virtually calculated condylectomy and the surgical outcome achieved with the aid of the surgical guide. No cases of condylar hyperplasia recurrence were observed.

Conclusion

An updated protocol based on accurate three-dimensional analysis was performed by means of virtual surgical planning and 3D printing. Virtual surgical planning allows one to precisely define the level of condylectomy, and custom-made 3D printed cutting guides are useful to reproduce virtual measurements during surgical maneuvers.

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